中文说明：
详细阐述了设计通信网络仿真环境里的各个参数，如带宽，延迟，掉包率，等等因素，这里的网络包括了WLAN，3G以及各种业务所需的基本条件。
English Description：
This paper expounds in detail the various parameters in the design of communication network simulation environment, such as bandwidth, delay, packet switching rate, etc. the network here includes WLAN, 3G and the basic conditions required by various services